[CORD-631] ICMPv6 Echo support

Changes:
- ICMPv6 Echo support;
- Introduces SegmentRoutingNeighbourHandler;
- Simplifies ArpHandler;
- Simplifies IcmpHandler;

Change-Id: I93f04d94ff15f43ca83f96cbab3da5064c215f9c
7 files changed
tree: 170f6b22db4e4d75ff30316c9956a41445eb5713
  1. BUCK
  2. app.xml
  3. features.xml
  4. pom.xml
  5. src/